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authorPetr Mladek <pmladek@suse.com>2019-09-16 12:54:25 +0200
committerPetr Mladek <pmladek@suse.com>2019-09-16 12:54:25 +0200
commitae88de56a1893bdccc7b5af8c12556de649d675e (patch)
treee3b70d7df5d379c20ac15d9fea3a7642e1f2f3e1 /kernel/printk
parentc9dccacfccc72c32692eedff4a27a4b0833a2afd (diff)
parent085a3a8fdf3e2fbd4678dbeccbb656bd328b3715 (diff)
Merge branch 'for-5.4' into for-linus
Diffstat (limited to 'kernel/printk')
-rw-r--r--kernel/printk/braille.c15
-rw-r--r--kernel/printk/printk.c22
2 files changed, 27 insertions, 10 deletions
diff --git a/kernel/printk/braille.c b/kernel/printk/braille.c
index 1d21ebacfdb8..17a9591e54ff 100644
--- a/kernel/printk/braille.c
+++ b/kernel/printk/braille.c
@@ -11,11 +11,18 @@
int _braille_console_setup(char **str, char **brl_options)
{
- if (!strncmp(*str, "brl,", 4)) {
+ size_t len;
+
+ len = str_has_prefix(*str, "brl,");
+ if (len) {
*brl_options = "";
- *str += 4;
- } else if (!strncmp(*str, "brl=", 4)) {
- *brl_options = *str + 4;
+ *str += len;
+ return 0;
+ }
+
+ len = str_has_prefix(*str, "brl=");
+ if (len) {
+ *brl_options = *str + len;
*str = strchr(*brl_options, ',');
if (!*str) {
pr_err("need port name after brl=\n");
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 424abf802f02..ca65327a6de8 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -118,19 +118,29 @@ static unsigned int __read_mostly devkmsg_log = DEVKMSG_LOG_MASK_DEFAULT;
static int __control_devkmsg(char *str)
{
+ size_t len;
+
if (!str)
return -EINVAL;
- if (!strncmp(str, "on", 2)) {
+ len = str_has_prefix(str, "on");
+ if (len) {
devkmsg_log = DEVKMSG_LOG_MASK_ON;
- return 2;
- } else if (!strncmp(str, "off", 3)) {
+ return len;
+ }
+
+ len = str_has_prefix(str, "off");
+ if (len) {
devkmsg_log = DEVKMSG_LOG_MASK_OFF;
- return 3;
- } else if (!strncmp(str, "ratelimit", 9)) {
+ return len;
+ }
+
+ len = str_has_prefix(str, "ratelimit");
+ if (len) {
devkmsg_log = DEVKMSG_LOG_MASK_DEFAULT;
- return 9;
+ return len;
}
+
return -EINVAL;
}